Katherynn \k(a)-thery-nn, kath(e)-rynn\ as a girl's name is a variant of Catherine (Greek), and the meaning of Katherynn is "pure".

The baby name Katherynn sounds like Katheryn, Kathrynn, Kathirynn and Katheryne. Other similar baby names are Kathryne, Kathryn, Kathiryn, Katherine, Katherina, Katherin, Katharyne, Katharyn, Cathrynn, Catheryn, Catherinn and Kathlynn.